Tim, we have a tool called GIS-Plan to do just that. GIS-Plan is a tool to generate territories from points or centroids of regions or lines/polylines. Thus, GIS-Plan can find the optimal location of one or more fire station sites based on drivetime and with regard to other (already existing) fire stations. Additionally, the tool calculates the actual drive time to each base unit (such as a street segment, a block or an individual house) from the site and also assigns the base units to a site. It could also be set up in a way to calculate the fastest route to an incident on demand, with alternatives in cases where the primary site is not available (eg once it already handles another fire...). GIS-Plan runs within MapInfo, and can thus handle any MapInfo data with an object attached to it. If you don't want to use MapInfo, GIS-Plan is also available as a SDK, consisting of a number of DLLs, the binary road network and documentation. Territories can be generated with regard to the following parameters: * Optimization based on a road network: shortest, fastest, cheapest path (different levels of road networks are an option) * The number of generated territories can be set to a given number, or, the number can be determined by balancing attribute data of the base units. Additionally, the optimal location of a site within a territory can be planned. Existing sites can be taken into account, thus forcing the tool to plan optimal territories around those locations The network used is a binary road network, attributed with all necessary routing information such as speed categories, one way streets, turning restrictions etc. This data is usually derived from NavTech data, but can basically be generated from other sources, provided is has the necessary attributes. If you need any further information, please don't hesitate to contact me at [EMAIL PROTECTED], or our sales department at [EMAIL PROTECTED] Cheers, Andreas Andreas Mahn DDS GmbH [----------------------------------------] Stumpfstr. 1 D - 76131 Karlsruhe Tel.: +49-(0)-721-9651406 Fax: +49-(0)-721-9651419 http://www.dds.ptv.de [EMAIL PROTECTED] > -----Ursprüngliche Nachricht----- > Von: Tim Rood [SMTP:[EMAIL PROTECTED]] > Gesendet am: Dienstag, 18. Januar 2000 19:56 > An: [EMAIL PROTECTED] > Betreff: MI Fire Station Location > > I've received an inquiry about locating fire stations based on the travel > time to properties in its vicinity. I don't know the exact problem they > need to solve, but it's of the nature of "We need to site a fire station > so that its coverage territory minimizes the overlap with the coverage > territory of other stations we have and is within five minutes travel on > the street network of any property in its coverage territory." I haven't > done this kind of analysis before and it would seem like the street > network > data would have to be somewhat richer than your standard street centerline > data; it might include road width, lanes, signals (not that fire trucks > would stop for them, but....), traffic direction (i.e., one way streets, > etc.) and other things that might have an impact on moving one or many > fire > trucks around town. Of course, responding is not the only aspect of site > a > fire station, but I think I'm more well-prepared to deal with the land > use, > zoning and development issues involved than with the time/distance part. > If you know a little bit about this subject, I would appreciate your > advise > on applications and data sources for doing this kind of analysis. > Thanks, > > Tim Rood > Ravenna Planning Associates > 5417 21st Avenue NE > Seattle, WA 98015-2408 > > phone: (206) 527-3181 > fax: (305) 489-6478 > email: [EMAIL PROTECTED] > ---------------------------------------------------------------------- > To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put > "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
